Model TC1230

Asynchronous RS-366 Fiber Optic Modem F

Product or Application Questions (click here)

  • Async Speeds up to 56 Kbps
  • Supports all 11 Control Signals
  • Multimode or Single Mode (850/1300/1550nm)
  • 6 Status LEDs
  • Sturdy Compact Metal Case
  • Hardened Temperature (optional)


Intended for Video Conferencing applications, the TC1230 Fiber Optic Modem transmits RS-366 dial-up information between Codecs and CSU/DSUs, Hubs and other Network Devices at the demarcation point.

The TC1230 supports asynchronous data rates up to 56Kbps and plugs directly into the RS-366 interface on the Codec and Network Device.  It supports all 11 standard RS-366 control signals (typically 5 in, 6 out), including handshaking.

Typical campus network distances are approximately 5 km multimode and 80 km single mode.  Distances can vary depending on the size and type of fiber optic cable, number of connections and type of connectivity devices.

The TC1230 works over all popular sizes and types of multimode (850/1300nm) or single mode (1300/1550nm) fiber optic cable.  Fiber optic connectors are ST or FC.  Electrical connectors are DB25 female.

Diagnostics include six status LEDs to indicate that the modem is operating correctly.  Power is 12VDC; optional 24VDC or 115/230VAC with an external power cube.  An extreme temperature version (-20 to 70C), Model TC1230T, is also available.

TC1230 Specifications

Data Rates
Async up to 56Kbps
Transmitter LED/ELED
Receiver PIN
Wavelength 850nm/1300nm multimode
  1300nm singlemode
Fiber Optic connectors ST (FC or SMA optional)
Loss Budget 15dB multimode 850nm/1310nm @62.5um
  15dB single mode
1310nm @9um
Connector DB25 Female
Type RS366 DCE
Bit error rate 1 in l09 or better
Power source I2VDC @300ma
optional: 115 or 230VAC with external power cube
Operating -100C to 500C
Hi-Temp (optional) -20 to 70C
Storage -400C to 900C
Humidity 95% non-condensing
Stand Alone Unit Height (2.03 cm) 0.8"
  Width (10.41 cm) 4.1"
  Depth (4.39 cm) 1.7"
  Weight (137 gm) 7 oz


 Typical Application (Application Questions)

The TC1230 is typically used to transmit dial-up information from a remote Codec to a CSU/DSU at the demarcation point over single mode or multimode fiber optic cable.  In addition to distance flexibility, it provides immunity from EMI/RFI interference, ground loops and lightning strikes.